sue I so feel for you and what you're going through. I've thought the same and OH has raised the point, what if something (god forbid) were to happen to me, I need to think about DD. Given that I'm older still, apparently older ladies (my type older, not yours, you're a spring chicken :) ) can have serious problems towards the end of their pregnancies.
However, I don't know, I felt absolutely fine when I had DD at just-39, and I don't feel any different now. Only you know how you feel, health-wise.
As for chasing that elusive egg, well that's another tricky one. We have absolutely no way, unfortunately, of telling what state our eggs in. I do think of abney and her success, but of course everyone's different.
I was going to ask the same thing as buzzy, have you thought of DE, but I see you don't want to do that and I understand. I know I wouldn't feel any different with a donor egg child than I would to DD - if I've carried it in my body then he or she would be my child in every way possible and I don't believe I would love him or her any differently, of course the whole epigenetic angle helps as well. But I completely hear you and your feelings (and your DH's) are obviously what count, only you know yourselves.
I know my DD's illness has made me rethink the whole process myself, but I still haven't come to any hard and fast decision even so.
I would caution against deciding anything right now, but perhaps taking a break from the whole rotten proceedings might help you. Give your body a bit of time to return to normal, and your heart and head some time to heal too. Getting off the rollercoaster might help things settle and see how you feel in a few months or so perhaps?
Take care of you, we all understand how you feel and we're here for you whatever you decide. xx